Number of tilings of a 3 X 5n rectangle with 3n pentominoes of any shape.
A233428
Number of tilings of a 3 X 5n rectangle with 3n pentominoes of any shape.
Terms
- a(0) =1a(1) =56a(2) =7670a(3) =1082911a(4) =153054306a(5) =21632866165
External references
- oeis: A233428